#pragma?once
#ifndef?COORDINATE_H
#define?COORDINATE_H
#include?<iostream>
using?namespace?std;
class?Coordinate{	
public:	
friend?bool?operator==(Coordinate?&,?Coordinate?&);	
friend?ostream&?operator<<(ostream?&os,?Coordinate?&coor);	
Coordinate&?operator=(const?Coordinate?&rhs);
	
Coordinate(int?x=0,?int?y=0);	
Coordinate(const?Coordinate?&rhs);	
//void?printCoordinate();
protected:
private:	
int?m_iX;	
int?m_iY;
};
Coordinate::Coordinate(int?x,?int?y)
{	
m_iX?=?x;	
m_iY?=?y;
}
Coordinate::Coordinate(const?Coordinate?&rhs)
{	
m_iX?=?rhs.m_iX;	
m_iY?=?rhs.m_iY;
}
Coordinate?&?Coordinate::operator=(const?Coordinate?&rhs)
{	
m_iX?=?rhs.m_iX;	
m_iY?=?rhs.m_iY;	
return?*this;
}
ostream&?operator<<(ostream?&os,?Coordinate?&coor)
{	
os?<<?"("?<<?coor.m_iX?<<?","?<<?coor.m_iY?<<?")"?<<?endl;
return?os;	
}
bool?operator==(Coordinate?&lhs,Coordinate?&rhs)
{	
if?(lhs.m_iX==rhs.m_iX&&lhs.m_iY==rhs.m_iY)		
return?true;	
else		
return?false;	
}?
#endif?//?!COORDINATE_H

operator==運算符重載仍然在下面這個成員函數(shù)中報錯

int?MyList::LocateMyList(Coordinate?*?p)
{	
for?(int?i?=?0;?i?<?m_iLength;i++)	
{		
if?(m_pList[i]?==?*p)	//error:沒有與這些操作數(shù)匹配的"=="運算符		
return?i;	
}	
return?-1;
}